Home / 30,781,412.90-42,477,694.40-16,842,711.96

Finding the Fourth Proportional to 30,781,412.90, 42,477,694.40 and 16,842,711.96

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Solution

The fourth proportional to 30,781,412.90, 42,477,694.40 and 16,842,711.96 is: 23,242,583.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,781,412.90 : 42,477,694.40 = 16,842,711.96 : x
  2. Step 2: Convert to fraction form
    30,781,412.90/42,477,694.40 = 16,842,711.96/x
  3. Step 3: Cross multiply
    30,781,412.90x = 42,477,694.40 × 16,842,711.96
  4. Step 4: Simplify right side
    30,781,412.90x = 715,439,571,504,105
  5. Step 5: Solve for x
    x = 715,439,571,504,105/30,781,412.90
  6. Step 6: Final answer
    x = 23,242,583.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.